NO. II LARVAE OF THE ELATERID BEETLES GLEN 7I 



fine hairs scattered on posterior surface. Trochanter with 4 to 6 spine- 

 like setae on medioanterior surface ; 3 to 4 such setae and i fine seta 

 scattered on posterior surface ; 2, sometimes 3, well-developed setae 

 on medial aspect. Femur usually with 6 to 9 spinelike setae on medio- 

 anterior surface; 2 or 3 spinelike setae and i or 2 slender setae on 

 posterior surface; i long seta on medial aspect; i or 2 fine setae on 

 lateral surface. Tibiotarsus with 6 setae around distal margin; 3 to 

 5 spinelike setae and i slender seta on medioanterior surface ; 2 to 5 

 spinelike setae on posterior surface ; usually i or 2 fine setae laterally. 

 Ungula, when uneroded, about three-fifths as long as tibiotarsus. 



First to eighth abdominal segments subequal; first segment short- 

 est; fourth to sixth segments widest. Mediotergites with scattered 

 small punctures; transverse branch of impression slightly sinuate, on 

 second to eighth segments reaching from one-half to slightly over 

 two-thirds distance from longitudinal branch to middorsal suture, 

 shorter on first segment ; longitudinal branch of impression extending 

 from two-thirds to five-sixths distance from transverse branch to 

 posterior transverse row of setae. Anterior part of each mediotergite 

 without row of setae. Posteriorly on each mediotergite, transverse 

 row of 5 to 8 prominent unpaired setae and usually 3 to 5 shorter 

 setae placed between (and sometimes slightly caudad to) some of 

 larger hairs. Usually 2 to 4 setae along margin of mediotergite, laterad 

 to impression. Laterotergite I extending length of segment; with 4 

 or 5 setae. Spiracles small, subequal in all segments; spiracular 

 sclerite small, subovate, in anterior half of segment, nearing middle 

 of segment in posterior part of abdomen. Pleurite large, subovate, 

 usually with 2 prominent setae, sometimes also i or 2 minute hairs. 

 Sternum typically of i piece, subquadrate ; with faint impressions near 

 lateral aspects (only rarely are these impressions deepened or suture- 

 like, separating ofif laterosternites on some of the more anterior seg- 

 ments) ; usually 6 to 8 prominent unpaired setae around margin of 

 sclerite, sometimes also a few minute setae. 



Ninth abdominal segment (fig. 17, a,), exclusive of urogomphi, 

 about as long as eighth abdominal segment and three-fourths as wide ; 

 almost as long as wide; sides of anterior half subparallel, posterior 

 half tapering caudally, making width at anterior margin of caudal 

 notch about two-thirds greatest width of segment. Dorsum convex 

 anteriorly, flattened posteriorly; sloping downward from front to 

 back. Dorsal plate (dpla) irregularly lined and wrinkled ; with a few 

 small pits ; 4 faint longitudinal impressions, 2 laterally and a short 

 paramedian pair (in anterior part of plate) which converge posteriorly 



